JAMEL M. ADOMA vs. PEOPLE OF THE PHILIPPINES

A valid warrantless arrest under the "hot pursuit" exception requires both personal knowledge of facts based on the arresting officers' own observation and strict immediacy between the commission of the offense and the arrest. Absent these elements, the arrest is unlawful, and any evidence seized incidental thereto is inadmissible under the exclusionary rule. Furthermore, unjustified deviations from the chain of custody protocol under Section 21 of Republic Act No. 9165, particularly the failure to photograph seized drugs and secure mandated witnesses, create reasonable doubt as to the evidence's integrity and mandate acquittal.

On the morning of September 21, 2013, Troy Garma reported to the Laoag City Police Station that his residence had been burglarized, resulting in the theft of multiple laptops, tablets, watches, and cash. Later that evening, Garma returned with Global Positioning System (GPS) tracking data indicating the stolen electronics were located at the residence of provincial government employee Caesar Martin Pascua. Police officers proceeded to Pascua's house, where Pascua claimed the petitioner had brought the items to him for password unlocking and reformatting. Pascua was brought to the police station, where he received a call from the petitioner inquiring about the laptops. Acting on police instructions, Pascua arranged for the petitioner to retrieve the devices. When the petitioner arrived at Pascua's house, paid for the service, and entered, police officers emerged, arrested him, and allegedly discovered two plastic sachets of methamphetamine hydrochloride (shabu) tucked in his waistband.

• The prosecution established that police officers, acting on GPS tracking data provided by the burglary victim, located stolen electronics at the residence of Caesar Martin Pascua. Pascua informed the officers that the petitioner had brought the items for reformatting. Under police direction, Pascua contacted the petitioner to arrange pickup. When the petitioner arrived, paid Pascua, and entered the house, officers executed a planned operation, arrested him, and conducted a body search. The search yielded a green plastic container containing two plastic sachets of suspected shabu. Due to the absence of marking materials at the scene, officers transported the petitioner and the seized items to the police station, where the sachets were marked, inventoried, and submitted for laboratory examination, which yielded positive results for methamphetamine hydrochloride.
• The defense did not contest that the petitioner brought the laptops to Pascua for servicing but challenged the legality of the arrest and the provenance of the drugs. The petitioner testified that he was ambushed inside Pascua's residence and alleged that an officer planted the sachets and a lighter on his person. He further testified that he was taken to a hospital, then to the police camp, and finally to the station without being informed of his rights or shown an inventory of the seized items.
• The Regional Trial Court convicted the petitioner, finding the arrest valid as incidental to a lawful apprehension and holding that minor inconsistencies in police testimony did not break the chain of custody. The Court of Appeals affirmed, ruling that the hot pursuit arrest was valid and the chain of custody remained unbroken despite procedural lapses. The petitioner elevated the case to the Supreme Court.

• Petitioner maintained that the warrantless arrest was unlawful because the police lacked personal knowledge based on their own observation and failed to satisfy the requirement of immediacy between the commission of the offense and the apprehension. Consequently, the ensuing search and seizure were invalid, rendering the seized drugs inadmissible as fruits of a poisonous tree. Petitioner further argued that the prosecution failed to strictly comply with Section 21 of Republic Act No. 9165, noting the absence of photographs, discrepancies regarding the location of marking, and the lack of required witnesses during inventory, which collectively broke the chain of custody and warranted acquittal.

• Respondent countered that the petition was procedurally defective for lacking verification and a sworn certification against forum shopping. On the merits, respondent argued that the warrantless arrest was valid under the hot pursuit exception, as the police possessed probable cause derived from the GPS tracking and the petitioner's voluntary retrieval of stolen property. Respondent further contended that the chain of custody was sufficiently established, characterizing the procedural deviations as minor and insufficient to cast doubt on the identity and integrity of the seized drugs.

• Procedural Issues: Whether the petitioner's failure to challenge the legality of his warrantless arrest before arraignment constitutes a waiver, and whether procedural defects in the petition warrant dismissal.
• Substantive Issues: Whether the warrantless arrest complied with the "hot pursuit" exception under Rule 113, Section 5(b) of the Revised Rules of Criminal Procedure, requiring personal knowledge and immediacy; and whether the prosecution established an unbroken chain of custody in strict compliance with Section 21 of Republic Act No. 9165.

• Procedural: The Court acknowledged that objections to the legality of a warrantless arrest must be raised before arraignment, and failure to do so constitutes a waiver. However, it ruled that such waiver does not cure the inadmissibility of evidence obtained from an unlawful search and seizure. The procedural infirmities in the petition did not bar judicial review, as the constitutional exclusionary rule mandates the suppression of illegally obtained evidence regardless of procedural technicalities.
• Substantive: The Court held that the warrantless arrest was invalid because the arresting officers relied solely on unverified tips from the complainant and a third party, lacking personal knowledge based on their own observation. The arrest was effected approximately three to four hours after the reported burglary, following investigative steps that negated the element of immediacy required for a hot pursuit arrest. Consequently, the incidental search was unlawful, and the seized drugs were inadmissible under the exclusionary rule. Even assuming admissibility, the prosecution failed to justify non-compliance with Section 21 of Republic Act No. 9165. The police did not photograph the seized drugs, and the mandatory witnesses from the media, Department of Justice, and an elected public official were absent during the inventory. These unjustified lapses created a substantial gap in the chain of custody, raising reasonable doubt as to the integrity of the evidence and compelling acquittal.

• Exclusionary Rule — Evidence obtained from an unlawful search and seizure is inadmissible for any purpose in any proceeding. The Court applied this doctrine to exclude the seized shabu, emphasizing that while the petitioner waived his right to challenge the arrest's legality by failing to raise it before arraignment, the waiver does not validate or render admissible evidence procured through an unconstitutional search.
• Hot Pursuit Arrest (Rule 113, Section 5(b)) — A warrantless arrest is lawful when an offense has just been committed and the arresting officer has probable cause based on personal knowledge of facts or circumstances that the person committed it. The Court clarified that personal knowledge must be derived from the officers' direct observation, and the arrest must be effected with strict immediacy to the commission of the offense. Reliance on unverified tips and delayed execution following investigative steps invalidates the exception.
• Chain of Custody under RA 9165, Section 21 — The law mandates the immediate physical inventory and photography of seized dangerous drugs in the presence of the accused and required witnesses to ensure evidentiary integrity. The Court held that the saving clause for noncompliance requires the prosecution to affirmatively acknowledge and justify the deviation under justifiable grounds. Unjustified failure to photograph the items and secure mandated witnesses compromises the chain of custody and warrants acquittal.

• "For a hot pursuit arrest to be valid, police officers must have personal knowledge of facts, based on their observation, that the person sought to be arrested has just committed a crime. Equally important is the required element of immediacy from the time the crime is committed up to the point of arrest." — The Court established the dual requirements of personal knowledge and immediacy as indispensable conditions for a lawful warrantless arrest under the hot pursuit exception, directly framing its analysis of the police officers' conduct.
• "Nonetheless, the waiver of the illegality of a warrantless arrest does not carry with it the admissibility of the evidence seized. In this case, the illegal warrantless arrest makes the incidental search and seizure invalid as well. This makes the seized items inadmissible in evidence, in consonance with the exclusionary rule under the Constitution." — The Court distinguished between waiving a challenge to the arrest's validity and validating the fruits of an unlawful search, reinforcing the constitutional mandate to suppress illegally obtained evidence.

• People v. Manago, 793 Phil. 505 (2016) — Cited as controlling precedent to define the parameters of Rule 113, Section 5(b) of the Revised Rules of Criminal Procedure, specifically emphasizing that probable cause for a hot pursuit arrest must be gathered within a limited timeframe and cannot be the product of exhaustive investigation.
• Veridiano v. People, 810 Phil. 642 (2017) — Cited to reinforce that personal knowledge must be strictly coupled with immediacy to constitute valid probable cause for a warrantless arrest, and that reliance on tips without independent verification fails this standard.
• Porteria v. People, 850 Phil. 259 (2019) — Cited to establish the settled rule that an accused's waiver of the right to question an illegal arrest does not extend to the admissibility of evidence seized incident to that unlawful arrest.

• Rule 113, Section 5(b) of the Revised Rules of Criminal Procedure — Provides the exception for warrantless arrests when an offense has just been committed and the officer has personal knowledge of facts indicating the suspect's guilt. The Court applied it to invalidate the arrest due to the absence of direct observation and the lapse of time between the burglary and the apprehension.
• Section 21 of Republic Act No. 9165 (Comprehensive Dangerous Drugs Act of 2002) — Mandates the immediate inventory and photography of seized drugs in the presence of the accused and specific witnesses. The Court invoked this provision to find the prosecution's failure to photograph the evidence and secure required witnesses unjustified, thereby breaking the chain of custody.
• 1987 Constitution, Article III, Section 3(2) — Establishes the exclusionary rule, declaring that evidence obtained in violation of the right against unreasonable searches and seizures is inadmissible. The Court relied on this constitutional provision to suppress the seized shabu and mandate the petitioner's acquittal.